ice: ndo_setup_tc implementation for PR

Add tc-flower support for VF port representor devices.

Implement ndo_setup_tc callback for TC HW offload on VF port representors
devices. Implemented both methods: add and delete tc-flower flows.

Mark NETIF_F_HW_TC bit in net device's feature set to enable offload TC
infrastructure for port representor.

Implement TC filters replay function required to restore filters settings
while switchdev configuration is rebuilt.

Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_repr.c b/drivers/net/ethernet/intel/ice/ice_repr.c
index cb83f58d7c71..c49eeea7cb67 100644
--- a/drivers/net/ethernet/intel/ice/ice_repr.c
+++ b/drivers/net/ethernet/intel/ice/ice_repr.c
@@ -5,6 +5,7 @@
 #include "ice_eswitch.h"
 #include "ice_devlink.h"
 #include "ice_virtchnl_pf.h"
+#include "ice_tc_lib.h"
 
 /**
  * ice_repr_get_sw_port_id - get port ID associated with representor
@@ -141,6 +142,55 @@ ice_repr_get_devlink_port(struct net_device *netdev)
 	return &repr->vf->devlink_port;
 }
 
+static int
+ice_repr_setup_tc_cls_flower(struct ice_repr *repr,
+			     struct flow_cls_offload *flower)
+{
+	switch (flower->command) {
+	case FLOW_CLS_REPLACE:
+		return ice_add_cls_flower(repr->netdev, repr->src_vsi, flower);
+	case FLOW_CLS_DESTROY:
+		return ice_del_cls_flower(repr->src_vsi, flower);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int
+ice_repr_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
+			   void *cb_priv)
+{
+	struct flow_cls_offload *flower = (struct flow_cls_offload *)type_data;
+	struct ice_netdev_priv *np = (struct ice_netdev_priv *)cb_priv;
+
+	switch (type) {
+	case TC_SETUP_CLSFLOWER:
+		return ice_repr_setup_tc_cls_flower(np->repr, flower);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static LIST_HEAD(ice_repr_block_cb_list);
+
+static int
+ice_repr_setup_tc(struct net_device *netdev, enum tc_setup_type type,
+		  void *type_data)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+
+	switch (type) {
+	case TC_SETUP_BLOCK:
+		return flow_block_cb_setup_simple((struct flow_block_offload *)
+						  type_data,
+						  &ice_repr_block_cb_list,
+						  ice_repr_setup_tc_block_cb,
+						  np, np, true);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
 static const struct net_device_ops ice_repr_netdev_ops = {
 	.ndo_get_phys_port_name = ice_repr_get_phys_port_name,
 	.ndo_get_stats64 = ice_repr_get_stats64,
@@ -148,6 +198,7 @@ static const struct net_device_ops ice_repr_netdev_ops = {
 	.ndo_stop = ice_repr_stop,
 	.ndo_start_xmit = ice_eswitch_port_start_xmit,
 	.ndo_get_devlink_port = ice_repr_get_devlink_port,
+	.ndo_setup_tc = ice_repr_setup_tc,
 };
 
 /**
@@ -170,6 +221,8 @@ ice_repr_reg_netdev(struct net_device *netdev)
 	netdev->netdev_ops = &ice_repr_netdev_ops;
 	ice_set_ethtool_repr_ops(netdev);
 
+	netdev->hw_features |= NETIF_F_HW_TC;
+
 	netif_carrier_off(netdev);
 	netif_tx_stop_all_queues(netdev);